This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
If the thief has a free fall then the weight of the box as experienced by the thief during jump is zero as we know during free fall m(g-g) which is equal to zero, where m is mass and g is gravity.